/* flex布局 */
.lf_row_f{
	display: flex;
	flex-direction: row;
}
.lf_row_a_f{
	display: flex;
	flex-direction: row;
	align-items: center;
}
.lf_row_j_f{
	display: flex;
	flex-direction: row;
	justify-content: center;
}
.lf_row_a_j_f{
	display: flex;
	flex-direction: row;
	align-items: center;
	justify-content: center;
}


.lf_column_f{
	display: flex;
	flex-direction: column;
}
.lf_column_a_f{
	display: flex;
	flex-direction: column;
	align-items: center;
}
.lf_column_j_f{
	display: flex;
	flex-direction: column;
	justify-content: center;
}
.lf_column_a_j_f{
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}
